Improvement in bungs



` 1. G; MARRIOTT & J; RUEGG.-

Bungs.

N0'. 128,742. Patented July 9,1872.

OFFICE.

JOSEPH G. MARRIOTT AND JOHN RUEGG, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN BUNGS.

Specification forming part of Letters Patent No. 128,742, dated July 9,1872.

the bung-holes of which are permanently provided with metal bushes. Theinvention consists in making the bung in two sections, connectedtogether in such a manner as to permit of the upper section beingscrewed into or withdrawn from the bush without turning the lower orsmooth-faced section, which is made to fit the corresponding face orinner periphery of the lower part ot' the bush, and,

f With the packing on which it rests when in position, forms an air-tight j oint, and thereby produces a bung or plug which is not liable toleak throughthe wearing of the screw-threads of the bush and bung, likethose of similar construction heretofore in use.

Inthe .accompanying drawing, Figure 1 is a topplan view of my improvedbush and bung. Fig. 2 is a top-plan view of the bung removed from thebush. Fig. 3 is a vertical section on the line :v Fig. 1. Fig. 4L isavertical section on the line y y, Fig. 2. Fig. 5 is a side elevationofthe bung. Fig. 6 is a side elevation of the bush with the bun g insertedtherein.

D represents the bush, which is screwedinto the bung-hole of the barrel,and is intended to be left permanently in that position. The upperportion of its inner periph-ery is cut with a screw-thread for thereception of the bung. The lower portion is cylindrical and is providedwith an annular groove or slot for the reception of the packing, asshown in Fig. 3 of the drawing. l

The bung or plug is made in two sections, A and B. The upper portion Ais provided with a wrench-shank, a, and an annular recess or depression,a', for the reception of the rench or key. Its outer periphery is cut tha screw-thread corresponding to the inner periphery of the bushing, andits lower part is contracted and formed into a neck, C,

having a rounded bottom and slightly iiared periphery. This neck-pieceforms a pivot on which the upper portion of the bung A is made to turnWithin the lower portion B, the latter being provided with a socket orrecess, b, having a dished bottom for its reception. The two portions Aand B are held together by means of a ring, K, tted in an annular slotformed in the socket b, and projecting beyond the slot closely aroundthe neck C. This connecting ring may be conveniently formed by fillingthe cavity between the parts A and B with molten tin or other metalwhich will permit of the two sections being moved upon each other aftercooling; but I do not limit myself to this method of connecting thesections of the plug or bung. Any device which will hold them together,yet permit of the portion A being freely turned within the portion B,may be substituted. V

The part B is also formed with an annular shoulder or projection, It,which iits truly with the inner periphery of the bushing, as shown inFig. 3 of the drawing. H is the packing, of rubber or other suitablematerial, which is fitted in the annular recess formed for its receptionin the bushing D. This packing is permanently secured to the bushing.

When the bung is inserted and screwedinto the bushing, by means of thewrench or key engaging with the Wrench-shaft a, the upper portion Apushes the lower portion B downward untilthe shoulders R come in closecontact with the packing H, when a perfectly air-tight joint is formed,and as the wear of the screw-threads does not affect the joint thusformed, it must be obvious that no leakage can occur from this causewith our improved bung.

What We claim as our invention isl. A bung, constructed of two parts, Aand B, the former having the neck C, the twoparts held together by ringK, and operated in manner and for the purpose specified.

2. The combination of bushingD and packing H with a bung, A B,constructed as described, and for the purpose specified.

JOSEPH Gr. MARRIOTT.

- JOHN RUEGG.

Witnesses:

LEO TAssIEUR, Louis' GRUND.

